The birth dates of Lemoine and Johnson being a week apart are clearly illogical, yet a double check of the records show that the data was properly entered as it appeared on the records. The most reasonable explanation is that they were twins, but somehow one of the birthdates was mis-entered into the record.

The Van Stone family had a history of Huntington's chorea (see The Van Stone Family Curse). Lucy's mother Mary was choreic in 1893, at age 35. Mary's illness likely had an extremely negative effect on youngest daughter Caroline. This lead to family scandal as described in The Importance of Being Ernest. Lucy and son Johnson also succumbed to the family curse.